http://e-repository.perpus.iainsalatiga.ac.id/14699
http://e-repository.perpus.iainsalatiga.ac.id/19122
http://e-repository.perpus.iainsalatiga.ac.id/19189
http://e-repository.perpus.iainsalatiga.ac.id/19459
http://e-repository.perpus.iainsalatiga.ac.id/18507